<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>数组去重</title>
</head>

<body>
    <script>
        function remove(arr, item) {
            return arr.filter(function(e) {
                return e != item;
            });
        }
        var arr = ['1', '2', '3', '4', '2', '5', '6', '2', '7', '2'];
        document.write(arr + '<br/>');
        document.write("需求分析1题计算结果" + remove(arr, 2) + '<br/>');

        var array = [4, 6, 0, 3, 0, 0, 0, 1, 3];
        var newArray = [];
        for (var i = 0; i < array.length; i++) {
            if (array[i] !== 0) {
                newArray[newArray.length] = array[i];
            }
        }
        document.write(array);
        document.write('<br/>' + "需求分析2题计算结果" + newArray)
    </script>
</body>

</html>